Practice Quiz

CWNA Wireless Network Administrator

Category - CWNA

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Why should you disable the two lowest rates on an 802.11b/g access point?
  1. To avoid noise in a coverage cell
  2. To enable collision detection in a coverage cell
  3. To enable hidden nodes to hear stations at the other end of coverage cell
  4. To avoid co-channel interference in a coverage cell
Explanation
Answer - C - You should disable the two lowest rates on an 802.11b/g access point to enable hidden nodes to hear stations at the other end of coverage cell.

Key Takeaway: Radio cards transmitting at slower data rates will occupy the medium much longer. Data transmitted at rates of 1 and 2 Mbps can create very large coverage cells. This prevents a hidden node station at one edge of the cell from being heard by other client stations at the opposite side of the coverage cell.
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